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anterolateral funiculus

the spinothalamic tract is a bundle of fibers located in the

anterior white commissure

cross over in the spinal thalamic tract occurs in the

anterolateral pathway

transmits pain, temp, crude/light touch, and itch sensations

neospinothalamic pathway

part of the ALS that is direct

paleospinothalamic pathway

part of the ALS that is indricet

skin, muscle, joints

location of free nerve endings of the ALS


spinothalamic tract goes to this part of the thalamus

neospinothalamic pathway

anterolateral pathway that carries well localized sharp, fast, discriminitive pain sensations. Spatial and temporal discrimination of pain.

dorsal root ganglia, substantia gelatinosa (Dorsal horn, 1 or more spinal levels above)

first order neurons of the STT cell bodies located in________ and synapse in ______


somatotopic arrangement of the STT lower extremity to upper extremity

metabolites (created from damage resulting in metabolic changes)

free nerve endings pick up

paleospinothalamic tract

anterolateral pathway that conducts slow, dull, nondiscriminative and affective aspects of pain


the anterolateral pathway is located ______ in the spinal cord and brain stem

contralateral side

damage to the lateral or anterolateral aspect of spinal cord or brain stem would always cause damage of pain/temp to the

lenticulate striate arteries

blood supply to internal capsule

medial thalamus

fibers of the paleospinothalamic tract end in the

dorsal roots, sharp, burning pain

dermatomal (radicular) pain results from irritation of _______, and feels like ______

ipsilateral loss of pain/temp

lesion of STT 1st order neuron results in

contralateral loss of pain/temp

lesion of STT beyond the 1st order neuron results in

post central gyrus

to have localization of pain, you need to have an intact _______

2 levels above, contralateral

STT injury occurs __________ the loss of pain/temp

2 segments above on contralateral side

if you want to eliminate pain at a level of the spinal cord, perform a tractotomy/cordotomy at _________


cavitation of central canal that damages the anterior white commisure

bilateral loss of pain and temp

syringomyelia results in

anterior spinal artery

blood supply to the lateral spinothalamic tract at the level of the C spine

anterior spina/vertebral artery

blood supply to the lateral spinothalamic tract at the caudal medulla

posterior inferior cerebellar artery

blood supply to the lateral spinothalamic tract at the level of the rostral medulla

rostral pons, midbrain, VPL, posterior limb of internal capsule, primary sensory cortex

areas where the dorsal column/medial lemniscus pathway and the lateral spinothalamic tract receive the same blood supply

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